You know you're taking a stance either way? It's nice to say "wait and see", but you can wait and see while being defederated as well. Starting to federate is basically the same decision as stopping to federate. Just because the one happens by default does not mean that federation happening isn't a conscious choice.

It's like laying in bed all day. Yea, you were in bed, so it's the default, so you could say you just "wait and see what the day brings". But you're still effectively choosing to stay in bed. You don't need to be surprised if nothing interesting happens in your day, and it was your choice that nothing interesting happens.

Same with federation and defederation. We already know Facebook is a bad actor. If we federate with them, we're saying "all right let's tolerate the shit coming at us", we're not "waiting and seeing what the day brings", because we already know the day is not going to be interesting, since we're staying in bed.

Sure, you might discover a new game on your phone while in bed and the day might still be amazing. We might discover threads is not bad after all. But it's just so much more likely to have cool things happen in a day when you're out of bed doing things. Same as it's much more likely that Threads is going to be shit.